Home / 712,660.24-983,417.79-406,728.10

Finding the Fourth Proportional to 712,660.24, 983,417.79 and 406,728.10

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Solution

The fourth proportional to 712,660.24, 983,417.79 and 406,728.10 is: 561,254.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,660.24 : 983,417.79 = 406,728.10 : x
  2. Step 2: Convert to fraction form
    712,660.24/983,417.79 = 406,728.10/x
  3. Step 3: Cross multiply
    712,660.24x = 983,417.79 × 406,728.10
  4. Step 4: Simplify right side
    712,660.24x = 399,983,649,232.90
  5. Step 5: Solve for x
    x = 399,983,649,232.90/712,660.24
  6. Step 6: Final answer
    x = 561,254.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.